Table 1 The chemical composition of SA-GO and AS-GO determined by XPS (at%)
From: Sulfur-Doped Alkylated Graphene Oxide as High-Performance Lubricant Additive
Species | Elements | Butylamine | Octylamine | Laurylamine | Octadecylamine |
|---|---|---|---|---|---|
SA-GO | C | 79.74 | 82.17 | 80.27 | 82.41 |
O | 14.49 | 11.71 | 13.51 | 10.88 | |
N | 3.83 | 3.63 | 3.42 | 3.55 | |
S | 1.94 | 2.49 | 2.8 | 3.16 | |
AS-GO | C | 92.15 | 89.73 | 89.93 | 89.84 |
O | 7.41 | 9.79 | 9.61 | 9.47 | |
N | 0.36 | 0.42 | 0.42 | 0.65 | |
S | 0.08 | 0.06 | 0.04 | 0.04 |